Quote:
Pstyle says:
Are you saying that, because we don;t know the AoB, we cannot therefore assume that their rotational velocity is equivalent
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That is correct.
Quote:
IvanK says:
Now lets look at this Clmax discussion which Crumpp claims the RAE cocked up.
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Why don't you do the math IvanK? You have a better idea of how to interpret aircraft data. That is not being patronizing, it is just a fact.
You can set emotion aside and let numbers fall where they may....
If you do the math, you will find the values for CLmax align with the NACA's!!
Spitfire Mk I:
Speeds Dynamic pressure CL
66 14.76610169
1.693067034
Once more, the RAE admits that operating a trailing static head is difficult as best. Do you know what you have to do? When installed, you have a tangle of tubes in the cockpit that the pilot must pinch off with an airtight seal on the correct lines at the right time. It is hard enough in cruise flight and would be extremely difficult to do accurately in a high performance fighter at the stall point.
That is why they labeled the values as "
assumed values of CLmax".
09-20-2012, 04:44 AM
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